NPV/IRR Comparison Calculator
Compare net present value and internal rate of return across up to 3 investment projects to decide which one to fund.
Quick answer: Fill in Option A for one investment, then add Option B and Option C to compare up to 3 at once, exactly what NPV and IRR analysis is built for: deciding which of several competing projects to fund. Only analysing one investment? Use the single NPV/IRR Calculator instead.
Compare NPV & IRR
Enter investment details for Option A, then optionally add up to 2 more to compare
Option A
Annual Net Cash Flow Comparison
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* IRR is calculated on equity (deposit) invested. NPV uses each option's required rate of return as the discount rate. CGT estimated on capital gain at exit. Bond term assumed 20 years. All projections are estimates, actual returns will vary.
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How to Use This Comparison Tool
- Fill in Option AEnter the purchase price, deposit, rent, costs, financing terms and required rate of return for the investment you want to analyse.
- Click + Compare Against Another OptionAdd Option B to weigh up a second investment project.
- Click + Compare A Third OptionAdd Option C if you have a third project to compare.
- Click Compare NPV & IRRSee both NPV and IRR for every option you filled in, side by side.
Why Compare NPV and IRR Across Multiple Investments?
NPV and IRR exist specifically to compare competing uses of the same capital, that's the entire premise behind discounted cash flow analysis. Looking at a single property's IRR in isolation tells you whether it clears your required return, but it doesn't tell you whether a different property would clear it by more, or use your deposit more efficiently to get there.
This tool puts your competing investments' NPV and IRR side by side in one view instead of checking each one separately on the single-property NPV/IRR Calculator. When NPV and IRR disagree between two options, usually because they have different holding periods or cash flow timing, NPV is generally the more reliable decision measure, since it expresses the return in actual rand value rather than a percentage that can be misleading when comparing projects of different sizes.
Frequently Asked Questions
Up to 3. Fill in Option A on its own for a single result, or add Option B and Option C to compare 2 or 3 investment projects side by side, with NPV and IRR shown for each.
When they conflict, usually because the options have different holding periods or cash flow timing, NPV is generally the more reliable decision measure, since it expresses the return in actual rand value at your required rate of return rather than a percentage that can be misleading when comparing projects of different sizes.
Only the options you fill in are calculated and shown. Leave Option C empty and the results panel shows just Option A and Option B side by side, with no placeholder or blank column for the unused option.